martes, 28 de julio de 2015

Differents kinds of pollution


Water pollution


However, floods, drought, poverty, pollution, inadequate waste treatment infrastructure and inadequate disinfection of water pose serious threats to public health, economic and social development of countries growth.

Should distinguish two types of pollution:

Natural -Contamination: is there always, caused by animal and plant residues and minerals and substances that dissolve when water bodies through different terrain.
Artificial -Contamination: will appear as the man begins to interact with the environment and comes with inadequate agglomeration of populations, and as a result of excessive and uncontrolled increase, industries, development and progress.




Air pollution


Air pollution occurs when certain toxic gases in contact with the particles of the atmosphere, seriously impairing and harmful to human health, animals and plants.

How the air is contaminated?

Air is composed of 78% nitrogen, 21% oxygen and the rest carbon and noble gases such as helium, neon, and radon dioxide. Radon is a radioactive gas that is produced naturally but in large quantities causes lung cancer. This gas persists in areas of high concentrations of uranium.



Noise pollution


The term "noise" refers to noise (understood as excessive and annoying sound) caused by human activities (traffic, industry, entertainment, aircraft, etc.), which has adverse effects on the auditory, physical health and mind of living beings.

This term is closely related to the noise because this is when the noise is considered a pollutant, ie, an annoying sound that can produce harmful physiological and psychological effects on a person or group of people.

The main causes of noise pollution are those related to human activities such as transportation, building construction and civil engineering, industries, among others.

It has been said by international agencies, the risk of a significant decrease in hearing, and the possibility of disorders ranging from the psychological (paranoia, perversion) to the physiological by excessive exposure to noise pollution run.

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